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Finding the Fourth Proportional to 950.73, 1,311.51 and 826.11

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Solution

The fourth proportional to 950.73, 1,311.51 and 826.11 is: 1,139.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.73 : 1,311.51 = 826.11 : x
  2. Step 2: Convert to fraction form
    950.73/1,311.51 = 826.11/x
  3. Step 3: Cross multiply
    950.73x = 1,311.51 × 826.11
  4. Step 4: Simplify right side
    950.73x = 1,083,451.53
  5. Step 5: Solve for x
    x = 1,083,451.53/950.73
  6. Step 6: Final answer
    x = 1,139.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.